Leveling-machine.



w. 0. BAXTER. LEVELING MACHINE. APPLICATION FILED NOV. 27. I915.

Patented Sept. 11, 1917.

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W. C. BAXTER. LEVELING MACHINE. I APPLlCATIGN maouov. 27. I915.

PatentedSept. 11,1917.

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W. C. BAXTER. [.EVELING MACHINE.

APPLICATION FILED NOV- 27,1915- l ;,'%3,6%. Patented Sept. 11, 191?.

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W. C; BAXTER Q I LEVELING MACHINE. I APPLICATION FILED Nov. 21, p915.

v Patented Se t. 11, 191?.

4 SHEETS-SHEET 4- lUNllTlllD @ith iTlilhi WILLIAM G. BAXTEB, 0E BEVERLY, MASSACHUSETTS, ASSIGNOR T0 UNITED SHOE MACHINERY COMPANY, OF PA'IERSQN, JERSEY, A CORPORATION OF NEW JERSEY.

LEVELING-MACHINE.

Specification of Letters Patent.

Patented Sept. 111, 1917.

Application filed November 27, 1915. Serial No. 63,854.

skilled in the art to which it appertains to make and use the same.

The present invention relates to machines for operating upon boots and shoes and more particularly to machines of this character employed in leveling the solesv of boots and shoes.

In a machine of this type a shoe supporting jack is oscillated relative to a leveling tool to cause the movement of the tool over the shoe bottom supported upon the jack and it is desirable that the extent of movement of the jack be adjusted automatically in accordance with the size adjustment of the jack.

One object of the present invention is to provide improved mechanism in a machine of the character described for automatically adjusting the travel of the jack beneath the leveling tool in accordance with the size adjustment of the jack.

The present invention is embodied in a twin leveling machine having two leveling tools and cooperating shoe supporting jacks with mechanism for actuating the jacks beneath the leveling tools.

A further object of the invention is to provide mechanism for independently determining the extent of movement of each jack in accordance with the size adjustment of the jack to enable the machine to operate upon shoes of difi'erent sizes at the same time.

One feature of the invention contemplates the provision in a machine having a pairof jacks and cooperating leveling tools, of a common actuating mechanism for both jacks, and independent connections between each jack and the actuating mechanism con-- nected with the jack and adjustable in accordance with the size adjustment of the jack. A further feature of the invention contemplates the provision of a shoe supporting jackhaving heel and toeposts adjustable relative to one another, a ack actuating mechanism, connections between the actuating mechanism and jack adjustable in accordance with the relative adjustment of the heel and toe posts, and means for securing a separate adjustment of the actuating connections relative to the jack.

Still further features of the invention consist in certain novel features of construction, combinations, and arrangements of parts hereinafter described and claimed, the advantages of which will be obvious to those skilled in the art from the following description.

In the accompanying drawings illustrating the preferred form of the invention; Figure 1 represents a side elevation of a machine embodying the features of the invention; Fig. 2 is a front elevation of the machine shown in Fig. 1; Fig. 3 is a detail illustrating a side elevation of a shoe supporting jack and the connected mechanism for varying the travel of the jack; and Fig. a is a detail showing a front elevation of the construction shown in Fig. 8.

The illustrated embodiment of the invention is shown particularly in connection with a machine of the character disclosed in the patent to Baxter, 1,208,895 granted December 19, 1916. This machine consists of a frame 1 having a pair of shoe supporting jacks 3, fulcrumed thereon at 5, and cooperating with a pair of leveling rolls 6. Each leveling roll is ournaled in a roll carrying head 8 fulcruined upon the frame at 9 and connected with a pressure mechanism indicated generally at 11 to maintain the roll in yielding engagement with the shoe sole. The roll is slidingly supported in a carrier 13 swiveled in the head 8 to permit lateral rocking movements of the roll and is vibrated from a counter-shaft 14 in a manner well known to those skilled in the art. The shoe supporting jack is provided with a toe post 15 and heel post 16 fulcrumed upon the toe post at 17 and adjustable relative thereto through a threaded adjusting member 18. The shoe supporting jack as a whole is oscillated beneath the leveling roll by an actuating cam 20 which operates a rockinglever 21 through a link 22 supported upon an arm 23 which is operatively connected with the path cam through an adjustable bell crank 24. The rocking lever 21 is fulcrumed upon the machine frame at and is operatively connected with the shoe supporting jack to cause an oscillatory movement of the jack beneath the leveling roll.

According'to the present invention improved mechanism is provided for adj ustlng the connection between the actuating mechamnrm 45 nism and the shoe supporting jack in accordance with the size adjustment of the jack. This mechanism insures that the relative travel of the roll and jack shall conform properly to the length of the shoe sole for any size of shoe which is operated upon. It will be obvious to those skilled in the art that the length of the sole for the same size of shoe will vary somewhat with the style of the shoe and in order to cause the relative travel of the roll and jack to correspond properly to the length of the sole for any style of shoe, mechanism is provided in addition for independently adjusting the actuating mechanism relative to the jack. In the illustrated embodiment of the invention, the machine is provided with a pair of shoe supporting jacks and in order to permit a different size adjustment of the two jacks and enable large and small shoes to be operated upon at the same time, independent connections are provided between the com mon actuating mechanism and each jack and each connection is adjusted automatically in accordance with the size adjustment of the respective jack. From an inspection of the drawings it will be noted that upon operating the threaded adjusting member 18 the heel post is oscillated about the fulcrum 17 toward and from the toe post to vary the size adjustment of the jack. This relative movement of the heel and toe posts is utilized to adjust the actuating connections for the jack through an arm extending from the heel post 16 and connected 7 through a link to one arm of a bell crank 31 fulcrumed upon the toe post at 32. The movement of the heel post toward and from the toe post oscillates the bell crank 31 and this movement of the bell crank is communicated to an actuating. lever 37 through an adjustable link connection indicated at 38. The end of the actuating lever is supported in the slotted arm 40 of a bell crank fulcrumed upon the shaft 5 and having a second arm 41 which is connected to the jack through a sliding pin 39 which engages a recess in the jack in a manner well known to those skilled in the art. VVith this construction the relative adjustment of the heel and toe posts varies the position of the actuating lever 37 with relation to the slotted arm 40 and consequently varies the extent of travel imparted to the shoe supporting jack. A simple and compact construction is provided for connecting the jack with the actuating mechanism and for-imparting the-requisite range of adjustmentto the actuating mechanism in accordance with the size adjustment of the jack. The actuating lever 37 is fulcrumed midway of its ends upon a supporting link 42 connected with the frameof the machine at 4:3 and has its lower end adjustably supported in a slotted mounted upon the shaft 25 and secured to the rocking lever 21. With this construction an adjustment of the upper end of the lever 37 in the slotted arm 40 causes a corresponding adjustment of the lower end of the lever with relation to the slotted arm 45, but in the opposite direction. In order to initially adjust the position of the actuating lever 37 to accommodate the travel of the jack for varying styles of shoes the con necting link 38 is preferably adjustable in length and to this end comprises a rotary adjusting member 50 journaled in a head 51 connected to the upper end of the actuatinglever and secured against longitudinal movement with relation to the head by oppositely disposed collars 53. The adjusting member 50 is provided upon one end with a hand wheel 55conveniently accessible to the operator and has its opposite end threaded in a head 56 pivoted to one arm of the bell crank 31. Vl 1th this construction on rotating the adjusting member the effective length of the connection 38 is varied to accurately determine the eXtentof travel of the shoe supporting jack imparted by the actuating mechanism. This furnishes a separate adjustment which enables the ma chine to operate properly upon widely varying styles of shoes and after'the mechanism has been adjusted for any given style of shoe the size adjustment of the jack automatically determines the travel of the jack to cause the proper movements ofthe leveling roll over the shoe sole. In order to independently adjust the' travel of each jack in accordance with the size adjustment of the jack independent connections are provided between the common actuating mechan1sm and each ack. To thls end the single rocking lever 21 is secured to anpair of slotted arms 45, as shown clearly in Fig. 2 and each of these arms is connected through an actuating lever 37 a second slotted arm 40, and an arm 41:1 with the respective jack. With this constructionboth jacks are operated by a common actuating mechanism and the length of travel of one jack is. determined in accordance with the size adjustment of the jack independently of thelength of travel imparted to the other jack.

While it is preferred to employ the specific construction and arrangement of parts shown and described, it will be understood that this construction and arrangement is not essential except so far as specified in the claims, and maybe changed or modified without departing from the broader features of the invention.

The invention having been described, what is claimed is l. A sole leveling machine, comprising a shoe supporting jack having heel and toe posts adjustable relative to one another, a jack actuating mechanism, connections between the actuating mechanism and jack, adjustable in accordance with the relative adjustment of the heel and toe posts, and means for scouring a separate initial adjustment of the actuating connections relative to the jack.

2. A sole leveling machine, having in combination, a pair of shoe supporting jacks and cooperating leveling tools, a common actuating mechanism for both jacks, and independent connections between each jack and the actuating mechanism connected with the jack and independently adjustable in accordance with the size adjustment of each jack.

3. A sole leveling machine, comprising a shoe supporting jack having heel and toe posts, means for relatively moving the heel and toe posts, actuating mechanism, a pair of slotted rocker arms, a link connecting the arms, and connections between the jack and link for simultaneously adjusting the ends of the link in opposite directions in the slotted arms to vary the travel of the jack in accordance with the size adjustment of the jack.

4. A sole leveling machine, comprising a pair of shoe supporting jacks, cooperating leveling devices, a rocking lever constructed and arranged to be connected to either jack, and separate connections between the rocking lever and each jack adjustable in accordance with the size adjustment of the jack to cause the movement imparted to the jack by the rocking lever to correspond with the size of the shoe supported upon the jack.

5. A sole leveling machine, comprising a shoe supporting jack having heel and toe posts relatively movable toward and from one another, means for adjusting the toe and heel posts, actuating mechanism, an actuating lever connecting the mechanism with the jack, connections between the actuating lever and jack to cause an adjustment of the lever in accordance with the size adjustment of the jack, and means under the control of the operator for adjusting the connections relative to the jack.

6. A sole leveling machine, having in combination, a pair of shoe supporting jacks and cooperating leveling tools, a common actuating mechanism for both jacks comprising a rocking lever, separate connections between the rocking lever and each jack comprising a pair of rocking arms, an actuating lever connecting the arms, and connections between one of the rocking arms and the jack.

7. A sole leveling machine, comprising a shoe supporting jack having a toe post, a heel post fulcrumed upon the toe post, means for moving the heel post toward and from the toe post, a bell crank lever fulcrumed upon the toe post, connections between the heel post and one arm of the bell crank lever, a jack actuating lever, and connections between the jack actuating lever and the second arm of the bell crank lever to cause an adjustment of the actuating lever in accordance with the adjustment of the heel post.

8. A sole leveling machine, comprising a shoe supporting jack having relatively movable heel and toe posts, an actuating lever fulcrumed between its ends, slotted rocker arms receiving opposite ends of the actuating lever, and connections between the actuating lever and jack for adjusting the position of the actuating lever with relation to the rocker arms in accordance with the size adjustment of the jack.

WILLIAM C. BAXTER.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

It is hereby certified that in Letters Patent No. 1,239,664, granted September 11, 1917, upon the application of William C. Baxter, of Beverly, Massachusetts, for

an improvement in Leveling-l/lachines, an error appears in the printed specification requiring correction as follows: Page 1, line 45, for the Word tools read rolls; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 9th day of October, A. D., 1917.

[sEAL.] F. W. H. CLAY,

Acting Commissioner of Patents. 01. 1234. 

